mat-file

问题 I'm sure this is a simple problem, but I haven't been able to find an obvious solution. I have a series of model output array files (dim 180, 360, 12) generated in matlab that I need to open in R. I have attempted to use the R.matlab package, simply using the readMat command, and this results in a list object. Attempting to write this list into a matrix results in a memory allocation error. I have tried unlisting, but that did not help either. How can I open these matlab matrix files and

问题 I'm sure this is a simple problem, but I haven't been able to find an obvious solution. I have a series of model output array files (dim 180, 360, 12) generated in matlab that I need to open in R. I have attempted to use the R.matlab package, simply using the readMat command, and this results in a list object. Attempting to write this list into a matrix results in a memory allocation error. I have tried unlisting, but that did not help either. How can I open these matlab matrix files and

问题 When I use !mdlname -p file.mat in command window of Matlab I have no errors, but when I use the command in .m file I get error that says that mat file can not be located. I tried to put full path name for file.mat like this !mdlname -p c:\path..\file.mat but I still get error saying mat file can not be found (error reading parameter data from mat-file) I tried using function system in m file and it works but I can't force function system to use file.mat like I can with -p . 回答1: system(['

问题 When I use !mdlname -p file.mat in command window of Matlab I have no errors, but when I use the command in .m file I get error that says that mat file can not be located. I tried to put full path name for file.mat like this !mdlname -p c:\path..\file.mat but I still get error saying mat file can not be found (error reading parameter data from mat-file) I tried using function system in m file and it works but I can't force function system to use file.mat like I can with -p . 回答1: system(['

问题 I am trying to convert a .mat file to csv using python. The code I am using is import scipy.io import numpy as np data = scipy.io.loadmat("wiki.mat") for i in data: if '__' not in i and 'readme' not in i: np.savetxt(("file.csv"),data[i],delimiter=',') When ever I run this code, I get error as follows: Traceback (most recent call last): File "test.py", line 8, in <module> np.savetxt(("file.csv"),data[i],delimiter=',') File "/Library/Python/2.7/site-packages/numpy/lib/npyio.py", line 1258, in

问题 I have been so distracted by the whole amount of pages documenting MATLAB Builder JA and running very low on time. My question is, how could I load a .mat file and access all variables of it? What I did is, I made my own class with all functions I need in MATLAB Builder JA, then added the .mat file I need and built all that. I made a java project now and instantiated an object of my class but now I want to access the variables saved in the .mat file in Java to pass it to the object's methods?

问题 I want to read a .mat file available at http://www.eigenvector.com/data/tablets/index.html. To access the data inside this file, I am trying the follwing: import scipy.io as spio import numpy as np import matplotlib.pyplot as plt mat = spio.loadmat('nir_shootout_2002.mat') # http://pyhogs.github.io/reading-mat-files.html def print_mat_nested(d, indent=0, nkeys=0): if nkeys>0: d = {k: d[k] for k in d.keys()[:nkeys]} if isinstance(d, dict): for key, value in d.iteritems(): print '\t' * indent +

问题 I have some data that I would like to save to a MAT file (version 4 or 5, or any version, for that matter). The catch: I wanted to do this without using matlab libraries, since this code will not necessary run in a machine with matlab. My program uses Java and C++, so any existing library in those languages that achieves this could help me out... I did some research but did not find anything in Java/C++. However, I found that scipy on python achieves this with mio4.py or mio5.py . I thought

问题 Matlab implementation of SIFT features were found from http://www.cs.ubc.ca/~lowe/keypoints/. with the help of stackoverflow. I want to save features to a .mat file. Features are roundness, color, no of white pixel count in the binary image and sift features. For the sift features I took descriptors in above code { [siftImage, descriptors, locs] = sift(filteredImg) } So my feature vector now is FeaturesTest = [roundness, nWhite, color, descriptors, outputs]; When saving this to .mat file

问题 Matlab implementation of SIFT features were found from http://www.cs.ubc.ca/~lowe/keypoints/. with the help of stackoverflow. I want to save features to a .mat file. Features are roundness, color, no of white pixel count in the binary image and sift features. For the sift features I took descriptors in above code { [siftImage, descriptors, locs] = sift(filteredImg) } So my feature vector now is FeaturesTest = [roundness, nWhite, color, descriptors, outputs]; When saving this to .mat file